US4339179A - Eyeglass frame having open rims closed by self-locking screw assemblies with dog clutch means - Google Patents

Eyeglass frame having open rims closed by self-locking screw assemblies with dog clutch means Download PDF

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Publication number
US4339179A
US4339179A US06/151,578 US15157880A US4339179A US 4339179 A US4339179 A US 4339179A US 15157880 A US15157880 A US 15157880A US 4339179 A US4339179 A US 4339179A
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US
United States
Prior art keywords
screw
lugs
frame part
part according
rim
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/151,578
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English (en)
Inventor
Jean Dany
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EssilorLuxottica SA
Original Assignee
Essilor International Compagnie Generale dOptique SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
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Publication of US4339179A publication Critical patent/US4339179A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
    • F16B39/26—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object with spring washers fastened to the nut or bolt-head
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C1/00—Assemblies of lenses with bridges or browbars
    • G02C1/06—Bridge or browbar secured to or integral with closed rigid rims for the lenses
    • G02C1/08—Bridge or browbar secured to or integral with closed rigid rims for the lenses the rims being tranversely split and provided with securing means

Definitions

  • the present invention relates generally to eyeglass frames, and more particularly to screw assemblies for closing the open ends of the rims for clamping lenses of the eyeglasses therein.
  • one end of one of the open rims forms the nut of the assembly and the other end of the rim forms an insert which is freely traversed by the shank of the screw itself.
  • the underside of the machine screw and the insert together define transverse bearing surfaces.
  • the bearing surfaces are urged together for clamping the rims around the corresponding lenses.
  • the insert member is fixed against rotation relative to the nut member since it is part of the same rim as the nut but is axially displaceable relative to the nut against the biassing means which tend to keep the insert away from the nut and which are defined by the inherent resilience of the rim itself.
  • the base transverse bearing surface formed on the insert engages the transverse bearing surface formed on the underside of the head of the screw.
  • the biassing means tend to urge the lugs away from each other.
  • An object of the invention is to provide an eyeglass frame having a rim the open end of which is closed by a screw assembly which is advantageously self-locking and disassemblable and reassemblable in its entirety.
  • an eyeglass frame part comprising at least one open rim for receiving a lens, superposed lugs being formed at the open ends of said rim, said rim being of resilient construction and biassing said lugs away from each other so as to define a gap constantly therebetween, and a screw assembly for closing said open rim and clamping a lens therein, including a machine screw having a head and a threaded shank, a nut member threadedly engageable with said threaded shank, and an insert member interposed between said head of said machine screw and said nut member, the underside of said head and said insert member defining cooperable transverse bearing surfaces, cooperable dog clutch means formed on said bearing surfaces, said nut member being formed on one of said lugs and said insert member being formed on the other of said lugs.
  • dog clutch means comprise at least one projection portion or boss on one of the transverse bearing surfaces at least partially engageable with play with at least one recess in the other transverse bearing surface.
  • a tool such as a socket screw key or a screwdriver, adapted to apply sufficient torque to the screw to overcome the resistance due to the dog clutch means.
  • Such unscrewing does not cause any damage to the transverse bearing surfaces so that the screw assembly according to the invention may be disassembled and reused even though it is self-locking in operation.
  • the present screw assembly of the invention has other advantages.
  • the screw assembly of the invention is of substantially the same dimensions as comparable conventional screw assemblies. This is particularly so since it advantageously does not employ any additional parts over that of conventional screw assemblies.
  • the screw assembly of the present invention defines torque limiting means. Starting from the moment the unscrewing torque is too small to overcome the resistance due to the dog clutch means, the unscrewing action may be stopped and the self-locking action is then assured without it being necessary to increase the screwing torque. Consequently the chance of rupture due to excessive traction on the screw is advantageously diminished.
  • FIG. 1 is a fragmentary perspective view of an eyeglass frame having at least one rim provided with a screw assembly embodying the invention
  • FIG. 2 is an enlarged cross-sectional view taken on line II--II in FIG. 1 of the machine screw assembly;
  • FIG. 3 is an elevational view on an even larger scale of the screw assembly
  • FIG. 4 is a fragmentary longitudinal sectional view of the machine screw taken on line IV--IV in FIG. 3.
  • an eyeglass frame preferably of metal construction, comprising two rims 10 connected to each other by a nose bridge 11 and adapted to receive eyeglass lenses, not shown.
  • the rims 10 form rings which are open at their outer ends 12A, 12B for which screw assemblies 13 are provided.
  • such a screw assembly comprises a machine screw 15 and a nut member 14, the head 16 of the machine screw 15 having on its underside a transverse bearing surface 17 adapted to engage a transverse bearing surface 18 fixed against rotation relative to the nut member 14.
  • the nut member 14 is integrally formed with the lug 20A laterally extending from the end 12A of the rim 10. Between the nut member 14 and the machine screw 15 is an insert member which, as illustrated, is integrally formed with a lug 20B projecting laterally from the other end 12B of the rim 10 in alignment with lug 20A.
  • the lugs 20A, 20B together define a yoke adapted to pivotally mount a bow or temple (not shown) of the eyeglass frame.
  • the pivotal mounting may be by means of a yoke integral with only one of the lugs 20A or 20B or more precisely one of the ends 12A or 12B of the particular rim.
  • the lug 20B has along the axis of tapped bore 21 of the nut member 14 a passageway 22 by which it is adapted to be freely traversed by the unthreaded portion of the shank 23 of the machine screw 15.
  • the lug 20B is carried by the same part as the nut member 14, namely, the rim 10, it is fixed against rotation relative to the nut member 16. Nonetheless, the lug 20B is axially displaceable in relation to the nut member 14 for closing the ring formed by the rim 10 around the eyeglass lens to be clamped in place.
  • the relative axial displacement of the lugs 20A and 20B necessary for the closing of the ring is effected against the force of the resilient biassing means defined by the body of the rim 10 which tend to move the lugs 20A and 20B away from each other but which in operation therefore tend to move the transverse bearing surfaces 17 and 18 toward each other.
  • transverse bearing surface 18 is formed on the insert member around the opening of the passageway 22 through the lug 20B adjacent the head 16 of the screw 15.
  • dog clutch means are provided on the transverse bearing surfaces 17 and 18 and are adapted to come into engagement with each other.
  • the dog clutch means comprise at least one projecting portion or boss 24, projecting from either one of the transverse bearing surfaces, for example, the bearing surface 17 on the underside of the head 16 of the screw 15, and at least one recess 25 on the other transverse bearing surface 18 at least partially in engagement with the projecting portion or boss 24.
  • both recesses and projecting portions are radially elongated and have axes of symmetry.
  • the projecting portions or bosses 24 and the recesses 25 both define half-wave forms flaring from their radially inner periphery to their radially outer periphery.
  • the transverse bearing surfaces 17 and 18 thus define a plurality of alternating regularly annularly distributed recesses and projecting portions.
  • the transverse bearing surface 17 on the underside of the head 16 of the screw 15 has alternating projecting portions 24 and recesses 25, and complementarily the base transverse bearing surface 18 has alternating recesses 25 and projecting portions or bosses 24.
  • the leading flanks of the projecting portions or bosses 24 and therefore the leading flanks of the recesses 25 have slopes A greater than the pitch B of the threads 27 of the screw.
  • each of the projecting portions 24 on the transverse bearing surface 17 on the underside of the head 16 of the screw 15 must clear in succession the projecting portions or bosses 24 on the base transverse bearing surface 18 as the screw is turned.
  • the gap J varies between a minimum distance when the projecting portions or bosses 24 on the underside of head 16 of the screw 15 are in alignment with the projecting portions or bosses 24 on the lug 20B and a maximum distance when the projecting portions 24 on the underside of the head 16 of the screw 15 are in alignment with the recesses 25 on lug 20B.
  • the transverse bearing surfaces with dog clutch means may be formed by any conventional mechanical method such as machining, die stamping or injection molding and the corresponding parts may be made of metal or synthetic material. Such bearing surfaces may not be integrally formed with their associated parts but formed on auxiliary parts suitably mounted on the former by welding, clipping or the like. In any event the surface quality of the bearing surfaces must be compatible with the sought-after results.
  • the present invention is moreover not limited to the illustrated and described embodiment but may encompass various expedients, and modifications without departing from the spirit and scope of the invention as defined by the appended claims.
  • the number and/or configuration of the projecting portions or bosses and recesses defining the dog clutch means may be designed differently.
  • the number of projecting portions or bosses and/or recesses on the transverse bearing surface on the underside of the screw head may be different from that of the projecting portions or bosses and/or recesses on the corresponding base transverse bearing surface on the insert member.
  • each of the projecting portions or recesses be of symmetrical half-wave configuration in a circumferential array.
  • the projecting portions and recesses may be circumferentially asymmetrical, the slope of their flanks in one direction being greater than the slope of their flanks in the opposite direction.
  • the projecting portions and recesses may be radially elongated.
  • the projecting portions and recesses may be of generally hemispherical configuration.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
US06/151,578 1979-05-22 1980-05-20 Eyeglass frame having open rims closed by self-locking screw assemblies with dog clutch means Expired - Lifetime US4339179A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7912942 1979-05-22
FR7912942A FR2457406A1 (fr) 1979-05-22 1979-05-22 Assemblage a vis, et application, notamment aux cercles de monture de lunettes

Publications (1)

Publication Number Publication Date
US4339179A true US4339179A (en) 1982-07-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US06/151,578 Expired - Lifetime US4339179A (en) 1979-05-22 1980-05-20 Eyeglass frame having open rims closed by self-locking screw assemblies with dog clutch means

Country Status (5)

Country Link
US (1) US4339179A (cg-RX-API-DMAC10.html)
JP (1) JPS5616109A (cg-RX-API-DMAC10.html)
DE (1) DE3019470C2 (cg-RX-API-DMAC10.html)
FR (1) FR2457406A1 (cg-RX-API-DMAC10.html)
IT (1) IT1130658B (cg-RX-API-DMAC10.html)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4790644A (en) * 1985-11-25 1988-12-13 Essilor International (Compagnie Generale D'optique) Glasses frame
US4904077A (en) * 1987-11-02 1990-02-27 Obe-Werk Ohnmacht & Baumgartner Gmbh & Co. Kg Eyeglass frame with locked screw joint
US5805257A (en) * 1996-09-06 1998-09-08 Hagler; Kristi L. Securing pin assembly for use with the frames of eye glasses
US6227666B1 (en) 2000-07-28 2001-05-08 Pareto Corporation Eyeglass frame with breakaway fastening member and method of inserting a lens in the frame
US20040096289A1 (en) * 2001-08-20 2004-05-20 Theodore Bydalek Fastener assembly
US20060237975A1 (en) * 2005-04-26 2006-10-26 Taiwan Fu Hsing Industrial Co., Ltd. Lock mounting plate having anti-loosening structure for connecting with a fixing member
EP1468195B1 (en) * 2001-09-06 2006-11-22 MacLean-Fogg GmbH Threaded fastener assembly
US20070071570A1 (en) * 2003-07-01 2007-03-29 Smolarek Hanna M Elastic joint element and fastener assembly incorporating the same
US7226259B2 (en) * 2001-08-20 2007-06-05 Maclean-Fogg Company Locking fastener assembly
US7334975B2 (en) 2001-08-20 2008-02-26 Maclean-Fogg Company Fastener assembly
EP1975420A1 (fr) * 2007-03-29 2008-10-01 Sotralu Dispositif d'assemblage par vis d'au moins une pièce rigide sur un support et ouvrant équipé d'un tel dispositif
US7438512B2 (en) 2001-08-20 2008-10-21 Maclean-Fogg Company U-bolt assembly
US7465135B2 (en) 2003-11-14 2008-12-16 Maclean-Fogg Company U-Nut fastening assembly
US7497653B2 (en) 2001-08-20 2009-03-03 Maclean-Fogg Company Locking fastener assembly
US20120250231A1 (en) * 2011-03-29 2012-10-04 Hon Hai Precision Industry Co., Ltd. Locking device and electronic apparatus using the same
US8790057B2 (en) 2012-12-27 2014-07-29 Tyco Electronics Brasil Ltda Threaded fastener
EP4227730A1 (en) * 2022-02-11 2023-08-16 Etnia Eyewear Culture, S.L. Rim lock for eyeglasses, eyeglasses and method of assembly
US20240074568A1 (en) * 2022-09-02 2024-03-07 Blue Force Gear, Inc. Accessory adapter

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60257421A (ja) * 1984-06-02 1985-12-19 Hamamoto Technical Kk インテグラル型メタルフロント枠の製造法
FR2591762B1 (fr) * 1986-06-13 1989-05-26 Jeunet Jean Pierre Systeme d'assemblage indesserrable pour articles de lunetterie et applications analogues
FR2621087B1 (fr) * 1987-09-30 1989-12-15 Dany Jean Assemblage a vis indesserrable, son procede de fabrication et application de celui-ci notamment aux montures de lunettes
DE8815277U1 (de) * 1988-12-08 1990-04-12 OBE-Werk Ohnmacht & Baumgärtner GmbH & Co KG, 7536 Ispringen Brillenfassung mit Schraubsicherung
DE8904802U1 (de) * 1989-04-17 1990-08-16 OBE-Werk Ohnmacht & Baumgärtner GmbH & Co KG, 75228 Ispringen Brillenfassung mit einer gegen Lösen gesicherten Schraubverbindung
JPH04101010U (ja) * 1991-02-05 1992-09-01 株式会社村井 ねじ及び眼鏡枠用ねじ
FR2808598B1 (fr) * 2000-05-05 2002-08-02 Abc Lunettes Monture de lunettes a branches articulees
DE102013211864B4 (de) * 2013-06-21 2019-05-23 PHI Technik für Fenster und Türen GmbH Anordnung zur Befestigung eines Pfostens an einer Kunststoff-Rahmenleiste eines Fensters oder einer Türe mittels eines Pfostenverbinders aus Kunststoff

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1576870A (en) * 1925-05-21 1926-03-16 Bausch & Lomb Ophthalmic mounting
US2037586A (en) * 1934-06-27 1936-04-14 Illinois Tool Works Locking means for threaded elements
US3438416A (en) * 1967-05-03 1969-04-15 Vare Corp Bolt assembly
FR1595149A (cg-RX-API-DMAC10.html) 1968-12-09 1970-06-08
US3802475A (en) * 1972-05-04 1974-04-09 Emhart Corp Fastener and fastener receiving device construction incorporating anti-backout resistance
FR2204816B1 (cg-RX-API-DMAC10.html) 1972-10-27 1977-03-11 Rodenstock Optik G

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FR499052A (fr) * 1919-05-06 1920-01-30 Nykyfor Hawrylasz Arret d'écrou
US1592627A (en) * 1925-12-31 1926-07-13 Egleston Charlie Loss-preventing attachment for ford transmission bands
FR647028A (fr) * 1928-01-13 1928-11-19 Perfectionnements aux montures de lunettes et lorgnons
CH129964A (de) * 1928-03-03 1929-01-02 Von Roll Ag Schraubenmutter-Sicherung.
US1929835A (en) * 1929-11-11 1933-10-10 Floor Accessories Company Inc Concrete insert
US1933536A (en) * 1930-05-16 1933-11-07 Floor Accessories Company Inc Concrete insert
US1896388A (en) * 1931-01-12 1933-02-07 Long Mfg Co Inc Lock for screw threaded devices
FR1111798A (fr) * 1954-09-29 1956-03-05 Forges & Boulonneries Hermant Perfectionnements aux dispositifs de liaison par tige filetée et écrou
JPS5421169Y2 (cg-RX-API-DMAC10.html) * 1976-09-21 1979-07-27

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1576870A (en) * 1925-05-21 1926-03-16 Bausch & Lomb Ophthalmic mounting
US2037586A (en) * 1934-06-27 1936-04-14 Illinois Tool Works Locking means for threaded elements
US3438416A (en) * 1967-05-03 1969-04-15 Vare Corp Bolt assembly
FR1595149A (cg-RX-API-DMAC10.html) 1968-12-09 1970-06-08
US3802475A (en) * 1972-05-04 1974-04-09 Emhart Corp Fastener and fastener receiving device construction incorporating anti-backout resistance
FR2204816B1 (cg-RX-API-DMAC10.html) 1972-10-27 1977-03-11 Rodenstock Optik G

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4790644A (en) * 1985-11-25 1988-12-13 Essilor International (Compagnie Generale D'optique) Glasses frame
US4904077A (en) * 1987-11-02 1990-02-27 Obe-Werk Ohnmacht & Baumgartner Gmbh & Co. Kg Eyeglass frame with locked screw joint
US5805257A (en) * 1996-09-06 1998-09-08 Hagler; Kristi L. Securing pin assembly for use with the frames of eye glasses
US6227666B1 (en) 2000-07-28 2001-05-08 Pareto Corporation Eyeglass frame with breakaway fastening member and method of inserting a lens in the frame
US7334975B2 (en) 2001-08-20 2008-02-26 Maclean-Fogg Company Fastener assembly
US20040096289A1 (en) * 2001-08-20 2004-05-20 Theodore Bydalek Fastener assembly
US7226259B2 (en) * 2001-08-20 2007-06-05 Maclean-Fogg Company Locking fastener assembly
US7497653B2 (en) 2001-08-20 2009-03-03 Maclean-Fogg Company Locking fastener assembly
US8011866B2 (en) 2001-08-20 2011-09-06 Maclean-Fogg Company Locking fastener assembly
US7438512B2 (en) 2001-08-20 2008-10-21 Maclean-Fogg Company U-bolt assembly
EP1468195B1 (en) * 2001-09-06 2006-11-22 MacLean-Fogg GmbH Threaded fastener assembly
US20070071570A1 (en) * 2003-07-01 2007-03-29 Smolarek Hanna M Elastic joint element and fastener assembly incorporating the same
US20100290857A1 (en) * 2003-07-01 2010-11-18 Iq Fasteners Pty Ltd. Elastic joint element and fastener assembly incorporating the same
US7465135B2 (en) 2003-11-14 2008-12-16 Maclean-Fogg Company U-Nut fastening assembly
US20060237975A1 (en) * 2005-04-26 2006-10-26 Taiwan Fu Hsing Industrial Co., Ltd. Lock mounting plate having anti-loosening structure for connecting with a fixing member
FR2914379A1 (fr) * 2007-03-29 2008-10-03 Sotralu Soc Par Actions Simpli Dispositif d'assemblage par vis d'au moins une piece regide sur un support et ouvrant equipe d'un tel dispositif.
EP1975420A1 (fr) * 2007-03-29 2008-10-01 Sotralu Dispositif d'assemblage par vis d'au moins une pièce rigide sur un support et ouvrant équipé d'un tel dispositif
US20120250231A1 (en) * 2011-03-29 2012-10-04 Hon Hai Precision Industry Co., Ltd. Locking device and electronic apparatus using the same
CN102724833A (zh) * 2011-03-29 2012-10-10 富泰华工业（深圳）有限公司 锁固装置及使用该锁固装置的电子设备
US8790057B2 (en) 2012-12-27 2014-07-29 Tyco Electronics Brasil Ltda Threaded fastener
EP4227730A1 (en) * 2022-02-11 2023-08-16 Etnia Eyewear Culture, S.L. Rim lock for eyeglasses, eyeglasses and method of assembly
US20240074568A1 (en) * 2022-09-02 2024-03-07 Blue Force Gear, Inc. Accessory adapter

Also Published As

Publication number Publication date
FR2457406B1 (cg-RX-API-DMAC10.html) 1984-03-02
DE3019470C2 (de) 1982-09-16
IT8022259A0 (it) 1980-05-22
JPS5616109A (en) 1981-02-16
FR2457406A1 (fr) 1980-12-19
IT1130658B (it) 1986-06-18
DE3019470A1 (de) 1980-12-04

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